1H-2-benzopyran-1-one, 3-(3-hydroxy-1-butynyl)- 3'-Hydroxycorfin 3-(3-Hydroxy-but-1-ynyl)-isochromen-1-one 3-(3-hydroxybut-1-yn-1-yl)-1H-isochromen-1-one InChI=1/C13H10O3/c1-9(14)6-7-11-8-10-4-2-3-5-12(10)13(15)16-11/h2-5,8-9,14H,1H